2 * ISO Media common code
3 * copyright (c) 2001 Fabrice Bellard
4 * copyright (c) 2002 Francois Revol <revol@free.fr>
5 * copyright (c) 2006 Baptiste Coudurier <baptiste.coudurier@free.fr>
7 * This file is part of FFmpeg.
9 * FFmpeg is free software; you can redistribute it and/or
10 * modify it under the terms of the GNU Lesser General Public
11 * License as published by the Free Software Foundation; either
12 * version 2.1 of the License, or (at your option) any later version.
14 * FFmpeg is distributed in the hope that it will be useful,
15 * but WITHOUT ANY WARRANTY; without even the implied warranty of
16 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
17 * Lesser General Public License for more details.
19 * You should have received a copy of the GNU Lesser General Public
20 * License along with FFmpeg; if not, write to the Free Software
21 * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
24 #ifndef AVFORMAT_ISOM_H
25 #define AVFORMAT_ISOM_H
32 extern const AVCodecTag ff_mp4_obj_type[];
33 extern const AVCodecTag ff_codec_movvideo_tags[];
34 extern const AVCodecTag ff_codec_movaudio_tags[];
35 extern const AVCodecTag ff_codec_movsubtitle_tags[];
37 int ff_mov_iso639_to_lang(const char lang[4], int mp4);
38 int ff_mov_lang_to_iso639(unsigned code, char to[4]);
42 /* the QuickTime file format is quite convoluted...
43 * it has lots of index tables, each indexing something in another one...
44 * Here we just use what is needed to read the chunks
47 typedef struct MOVStts {
52 typedef struct MOVStsc {
58 typedef struct MOVElst {
64 typedef struct MOVDref {
70 int16_t nlvl_to, nlvl_from;
73 typedef struct MOVAtom {
75 int64_t size; /* total size (excluding the size and type fields) */
78 struct MOVParseTableEntry;
80 typedef struct MOVFragment {
82 uint64_t base_data_offset;
84 uint64_t implicit_offset;
92 typedef struct MOVTrackExt {
100 typedef struct MOVSbgp {
105 typedef struct MOVFragmentIndexItem {
109 } MOVFragmentIndexItem;
111 typedef struct MOVFragmentIndex {
114 unsigned current_item;
115 MOVFragmentIndexItem *items;
118 typedef struct MOVStreamContext {
121 int ffindex; ///< AVStream index
123 unsigned int chunk_count;
124 int64_t *chunk_offsets;
125 unsigned int stts_count;
127 unsigned int ctts_count;
129 unsigned int stsc_count;
131 unsigned int stps_count;
132 unsigned *stps_data; ///< partial sync sample for mpeg-2 open gop
134 unsigned int elst_count;
137 unsigned int sample_size; ///< may contain value calculated from stsd or value from stsz atom
138 unsigned int stsz_sample_size; ///< always contains sample size from stsz atom
139 unsigned int sample_count;
142 unsigned int keyframe_count;
145 int64_t time_offset; ///< time offset of the edit list entries
147 unsigned int bytes_per_frame;
148 unsigned int samples_per_frame;
149 int dv_audio_container;
150 int pseudo_stream_id; ///< -1 means demux all ids
151 int16_t audio_cid; ///< stsd audio compression id
152 unsigned drefs_count;
156 int wrong_dts; ///< dts are wrong due to huge ctts offset (iMovie files)
157 int width; ///< tkhd width
158 int height; ///< tkhd height
159 int dts_shift; ///< dts shift when ctts is negative
160 uint32_t palette[256];
163 uint32_t tmcd_flags; ///< tmcd track flags
164 int64_t track_end; ///< used for dts generation in fragmented movie files
165 int start_pad; ///< amount of samples to skip due to enc-dec delay
166 unsigned int rap_group_count;
169 int nb_frames_for_fps;
170 int64_t duration_for_fps;
172 int32_t *display_matrix;
177 uint8_t* auxiliary_info;
178 uint8_t* auxiliary_info_end;
179 uint8_t* auxiliary_info_pos;
180 struct AVAESCTR* aes_ctr;
184 typedef struct MOVContext {
185 const AVClass *class; ///< class for private options
188 int64_t duration; ///< duration of the longest track
189 int found_moov; ///< 'moov' atom has been found
190 int found_mdat; ///< 'mdat' atom has been found
191 int found_hdlr_mdta; ///< 'hdlr' atom with type 'mdta' has been found
192 int trak_index; ///< Index of the current 'trak'
194 unsigned meta_keys_count;
195 DVDemuxContext *dv_demux;
196 AVFormatContext *dv_fctx;
197 int isom; ///< 1 if file is ISO Media (mp4/3gp)
198 MOVFragment fragment; ///< current fragment in moof atom
199 MOVTrackExt *trex_data;
201 int itunes_metadata; ///< metadata are itunes style
202 int handbrake_version;
204 int use_absolute_path;
207 int seek_individually;
208 int64_t next_root_atom; ///< offset of the next root atom
211 int *bitrates; ///< bitrates read before streams creation
215 int has_looked_for_mfra;
216 MOVFragmentIndex** fragment_index_data;
217 unsigned fragment_index_count;
218 int fragment_index_complete;
220 unsigned int aax_mode; ///< 'aax' file has been detected
221 uint8_t file_key[20];
223 void *activation_bytes;
224 int activation_bytes_size;
225 void *audible_fixed_key;
226 int audible_fixed_key_size;
227 struct AVAES *aes_decrypt;
228 uint8_t *decryption_key;
229 int decryption_key_len;
233 int ff_mp4_read_descr_len(AVIOContext *pb);
234 int ff_mp4_read_descr(AVFormatContext *fc, AVIOContext *pb, int *tag);
235 int ff_mp4_read_dec_config_descr(AVFormatContext *fc, AVStream *st, AVIOContext *pb);
236 void ff_mp4_parse_es_descr(AVIOContext *pb, int *es_id);
238 #define MP4ODescrTag 0x01
239 #define MP4IODescrTag 0x02
240 #define MP4ESDescrTag 0x03
241 #define MP4DecConfigDescrTag 0x04
242 #define MP4DecSpecificDescrTag 0x05
243 #define MP4SLDescrTag 0x06
245 #define MOV_TFHD_BASE_DATA_OFFSET 0x01
246 #define MOV_TFHD_STSD_ID 0x02
247 #define MOV_TFHD_DEFAULT_DURATION 0x08
248 #define MOV_TFHD_DEFAULT_SIZE 0x10
249 #define MOV_TFHD_DEFAULT_FLAGS 0x20
250 #define MOV_TFHD_DURATION_IS_EMPTY 0x010000
251 #define MOV_TFHD_DEFAULT_BASE_IS_MOOF 0x020000
253 #define MOV_TRUN_DATA_OFFSET 0x01
254 #define MOV_TRUN_FIRST_SAMPLE_FLAGS 0x04
255 #define MOV_TRUN_SAMPLE_DURATION 0x100
256 #define MOV_TRUN_SAMPLE_SIZE 0x200
257 #define MOV_TRUN_SAMPLE_FLAGS 0x400
258 #define MOV_TRUN_SAMPLE_CTS 0x800
260 #define MOV_FRAG_SAMPLE_FLAG_DEGRADATION_PRIORITY_MASK 0x0000ffff
261 #define MOV_FRAG_SAMPLE_FLAG_IS_NON_SYNC 0x00010000
262 #define MOV_FRAG_SAMPLE_FLAG_PADDING_MASK 0x000e0000
263 #define MOV_FRAG_SAMPLE_FLAG_REDUNDANCY_MASK 0x00300000
264 #define MOV_FRAG_SAMPLE_FLAG_DEPENDED_MASK 0x00c00000
265 #define MOV_FRAG_SAMPLE_FLAG_DEPENDS_MASK 0x03000000
267 #define MOV_FRAG_SAMPLE_FLAG_DEPENDS_NO 0x02000000
268 #define MOV_FRAG_SAMPLE_FLAG_DEPENDS_YES 0x01000000
270 #define MOV_TKHD_FLAG_ENABLED 0x0001
271 #define MOV_TKHD_FLAG_IN_MOVIE 0x0002
272 #define MOV_TKHD_FLAG_IN_PREVIEW 0x0004
273 #define MOV_TKHD_FLAG_IN_POSTER 0x0008
275 #define TAG_IS_AVCI(tag) \
276 ((tag) == MKTAG('a', 'i', '5', 'p') || \
277 (tag) == MKTAG('a', 'i', '5', 'q') || \
278 (tag) == MKTAG('a', 'i', '5', '2') || \
279 (tag) == MKTAG('a', 'i', '5', '3') || \
280 (tag) == MKTAG('a', 'i', '5', '5') || \
281 (tag) == MKTAG('a', 'i', '5', '6') || \
282 (tag) == MKTAG('a', 'i', '1', 'p') || \
283 (tag) == MKTAG('a', 'i', '1', 'q') || \
284 (tag) == MKTAG('a', 'i', '1', '2') || \
285 (tag) == MKTAG('a', 'i', '1', '3') || \
286 (tag) == MKTAG('a', 'i', '1', '5') || \
287 (tag) == MKTAG('a', 'i', '1', '6') || \
288 (tag) == MKTAG('a', 'i', 'v', 'x') || \
289 (tag) == MKTAG('A', 'V', 'i', 'n'))
292 int ff_mov_read_esds(AVFormatContext *fc, AVIOContext *pb);
293 enum AVCodecID ff_mov_get_lpcm_codec_id(int bps, int flags);
295 int ff_mov_read_stsd_entries(MOVContext *c, AVIOContext *pb, int entries);
296 void ff_mov_write_chan(AVIOContext *pb, int64_t channel_layout);
298 #define FF_MOV_FLAG_MFRA_AUTO -1
299 #define FF_MOV_FLAG_MFRA_DTS 1
300 #define FF_MOV_FLAG_MFRA_PTS 2
302 #endif /* AVFORMAT_ISOM_H */